Grizzly Bear
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- Joined
- May 30, 2008
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10 times so 3g ?
May be in compression but when you have a progressive collapse, of course, this is what happened ! And the bolts have failed when the bending moment was too strong... See the wreckage !...
20% maximum
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Can I see the calculation ? Thank you...
I don't know where he gets the 20% figure, although I have a feeling he bases it on his assumption that temperatures overall remained below 600oC. Wrong to begin with since he bases that assumption on cherry-picking the NIST report...
And the load capacity of a column is dictated partly by the cross-sectional area. This of course is meaningless if the load becomes eccentric (eg out-of-plane as you suggest) as was the case when the fire region columns buckled.